Computing-scale.



(No Model.)

Patented Nov. I3, I900. A. DE VILBISS, 1R. COMPUTING SCALE.

(Application filed Apr. 16, 1900.)

2 Sheets-Sheet l.

0 N 311 nude V.

a Horne/1 Patented Nov. 13, I900.

A. DE VILBISS, 1n.

COMPUTING SCALE.

(Application filed Apr. 16, 1900.)

2 Sheets-Sheet 2-.

(No Model.)

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UNITED STATES PATENT OEEIcE.

ALLEN DE VIL'BISS, JR., OF TOLEDO, OHIO.

COMPUTING-SCALE.

SPECIFICATION forming part of Letters Patent No. 661,856, dated November 13, 1900.

Application filed April 16, 1900. aerial No. 13,002. (No modelfi T ctZZ whom, it may concern:

Be it known that I, ALLEN DE VILBISS, J12, a citizen of the United States, and a resident of Toledo, Lucas county, State of Ohio, have invented certain new and useful Improvements in Computing-Scales, (Case IQ) and my preferred manner of carrying out the invention is set forth in the following full,clear, and exact description ,terminating with claims particularly specifying the novelty.

This invention relates to scales of that class which indicate. the price of the commodity weighed; and the object of the same is to improve and simplify the construction of such a scale.

To this end it consists, broadly, in means for tilting the scale-beam by a push-bar which elevates the beam forward of its fulcrum rather than a pull-bar which depresses it in rear thereof and in means for completely disengaging the push-bar from the beam when the latter is to be adjusted to a new price per pound; and it consists, specifically, in the details whereby these general ideas are carried out.

It also consists in a new construction of pendant for the capacity-weights, whereby the capacity of the scale can be increased to a much greater degree than in devices of this character now on the market.

Reference is made to the following specification and to the attached drawings, where- Figure 1 is a side elevation of the scale complete, broken away at certain points. Fig. 2 is a section on the line A A of Fig. 1. Fig. 3

is a section on the line B B with the scalebeam raised so as to disengage the push-bar. Fig. 4 is a section on the line 0 0, showing the preferred construction of the push-bar. Fig. 5 is a perspective detail illustrating the rock-shaft, one cam, and the dog and teeth. Fig. 6 is a horizontal section through the support of the pendant and a plan view of one weight on the latter.

1 is the framework common to scales of this type, and 2 is a rod leading upward from the pan or platform. (Not shown.) This rod is connected with one end of a lever 3, which is pivotally supported, as at 1, below the head of the framework, which forms a horizontal track 5, and this lever may constitute a scalebeam and have a pendant G for capacityweights. In fact, the lever itself may be or may have attached thereto a tare-beam 7, with its weight for counterbalancing the receptacle containing the load, or this weight may be adjusted for increasing the capacity. Mounted on the track is a carriage 10, preferably having wheels 11, and some means, such as the flanges 12, for preventing lateral displacement. Journaled longitudinally in this carriage is a rock-shaft 13, having a handle lat, and fast on the shaft is a dog 15, adapted to engage teeth 16 in the inner edge of one of the two rails of which the track is composed. (See Fig. 5.) Mounted on the carriage are pillars 17, within which are located movable pins 18 and 19, the former being twin pins connected at their lower ends by a head 20, and the latter a single pin with or without a head at its lower end. Said heads or lower ends stand above cams 21, fast on the rock-shaft 13, and are raised thereby when the shaft is turned in one direction or otherwise descend by gravity.

is the scale-beam, here shown as made in three horizontal parallel strips, of which the uppermost 31 is useful, as described be low, and the lowermost 32 stands near its outer end above the pin 19 and carries at its extremity the usual finger 33, engaging an opening in a bracket 34 to limit the play of the entire beam.

35 is the fulcrum, here shown as knifeedges mounted in bearings 36, supported by cap-pieces 37,whieh stand over the upper ends of the twin pins 18 (see Fig. 3) and rest normally upon the twin pillars 17. hen the rock-shaft is turned, the twin pins 18 raise the cap-pieces 37 and the bearings 36 and the single pin 19 raises the end of beam 30. This movement of the shaft has disengaged dog 15 from the teeth 16, and hence the carriage, the beam, and its support may be adjusted longitudinally on the track. The shaft can then be turned back so that the pins descend, the cap-pieees 37 rest on the twin pillars 17, the single pin 19 disengages the beam, and the latter is again free for movement.

40 is a push-bar having at its upper extremity a point 41, beneath that an eye or opening #12 to surround the lower strip 32 if the latter is employed or to surround the shaft 13, or both, beneath the eye a straight body passing loosely through the carriage and between the rails of the track, near its lower end a fork e13, pivoted to the lever 3, as by knife-edges 1-4, herein shown, and at its lower extremity a counterweight 45. The latter and the push-bar are oi such weight and the pivots 4t and 4.4 so located with respect to each other and to the rod 2 that all these parts are normally balanced and the push-bar stands normally vertical. The carriage 10 has a longitudinal slot :25, (see Fig. 4,) through which the bar projects, and rising from the track 5 are'fingers at whose tips 4-7 are spaced to permit vertical movement, but prevent lateral oscillation of the push-bar.

The lower edge of the beam (here the central strip thereof) is provided with notches 50, corresponding accurately with the teeth 16, and the point/4i is held by the fingers at so that it must engage one notch when the beam is lowered. When the beam is raised, no part of it touches the push-bar, whether the latter stands raised or lowered by the presence or absence of a load, and this is due to the fact that the cams raise the beam to a greater degree than the lever 3 ever raises the pushbar. Adjacent the notches 50 is a scale 51, indicating prices per pound which the notches represent. In the present case there are two rows of figures opposite this scale, the row 52, having the smaller numbers, being on alight or white portion oftheheam, and the row 53, having the larger numbers, (here four times the smaller,) being, respectively,adjacent the others and on a shaded or red portion of the beam, and the larger numbers begin where the smaller leave off.

54c is the weight which balances the load. It is here shown as sliding loosely between two of the strips of the beam and as having two pointers 55.

56 is a scale of totals representing the prodnot of the load multiplied by the price per pound. This scale is here shown with two rows of figures, the smaller numbers 57 being inscribed upon a light or white portion of the main strip of the beam and the larger numbers upon the uppermost strip 31, which is here entirely shaded or red. it will be clear that when the price per pound is indicated by one of the smaller numbers 52 the total must be read by one of the smaller total 11 umbers 57, which is of the same color in order to avoid confusion and mistakes.

is a pendant for capacity-weights, one of which is shown in plan view in Fig. 6. The stem 61 of this pendant forms in cross-section three sides of a hollow square, across which a knife-edge 62 is located above the center of gravity of the entire pendant, this knife-edge resting removably in a notch 63 in the nose 64 of the beam. This form of pendant is shown herein only in connection with the main beam; but it is clear that it could be used in connection with the lever 3. The capacity-weights (36 are preferably of circular contour, with the usual notch (35 in one side, and the notch is here of a size to entirely em brace the stem, by which construction capacity-weights can be loaded onto the pendant up to, past, and above its support (32, as indicated in Fig. 1, a function which is not possible with the common type of pendant, (indicated at 6.) Each weight 66 is preferably inscribed, as shown in Fig. (5, wherein onethird is white and marked 50p, another third is red and marked $2, and the remainder is marked 10 lbs. This weight hung on the pendant 6O adds fifty cents to the white row of totals or two dollars to the red row and increases the capacity of computation to this extent, and this same weight hung on the pendant at 6 increases the capacity of the beam 7 by ten pounds. To provide one weight useful for both increasing the scope of computation and the capacity of weight, it will be necessary to properly proportion thesevcral parts of the scaleand the size of the weight, the marking of the latter being merely for convenience.

Both the lever and beam are normally balanced, with the point il engaging a notch 50. \Vhen a load is placed on the platform, the push-bar rises and raises the beam 30. The weight 5i is then moved along this beam until the latter is again balanced, and one of the pointers will then stand opposite a number on the beam indicating the total value, which is the product oi the weight of the commodity multiplied by the price per pound. The latter is designated by the notch which the point enters, and usually before the load is put on the platform the rock-shaft is manipulated to adjust the beam 30, so that the proper notch will engage the point. However, it will be clear that the above construction permits this adjustment of the beam even after the load has raised the push-bar, and this is one important feature of the invention. It will be seen that if the price per pound is not found on the lower white row 52 the point is engaged with a notch opposite the red row 53 and the corresponding red row of totals is brought into use. The beam '7 may be used for tare purposes, as usual, or it may be em ployed for simple weighing purposes, in which case its figures indicate total weights. The weight 64 added to the pendant (3 here oilisets ten pounds on the pan and increases the capacity of the beam 7, so that the latter weighs from ten pounds to twenty. This same weight added to the pendant (50 increases the white row of totals 57 by fifty cents or the red row of totals 58 by two dollars, after which the weight 54: is moved over the scale 50 to indicate totals beyond the increase produced by the addition of the capacity-weight. As here tofore constructed the rod 2 connected the platform with the scale-beam in rear of the pivot of the latter and tilted it on its fulcrum by a downward pull, and the addition of the lever 3 and the bar lO, which raises the front end of the beam rather than depresses its rear end, is considered a decided advantage. Not

only is the action of the beam positive instead of one which tilts it over its fulcrum, but, as above described, this construction permits the beam to be entirely disengaged from the push-bar (whether the latter stands raised or not) and moved to a different price per pound, a function which is not possible without considerable resistance where the rod 2 is ever supported by the beam.

What is claimed as new is 1. In a scale, the combination with a pushbar raised by the descent of the platform and pointed at its upper end, a horizontal track having teeth, a carriage movable thereon and having a support, a dog in the carriage normally engaging the teeth, and means for simultaneously disengaging said dog and raising said support; of a beam fulcrumed on said support and having in its lower edge price-per-pound notches corresponding with the teeth, the beam also having a scale-ofprice totals, and a weight movable over the latter.

2. In a scale, the combination with a pushbar raised by the descent of the platform and pointed at its upper end, a horizontal track having teeth, a carriage movable thereon and having a pillar, a rock-shaft journaled in said carriage and having a handle, a cam on this shaft beneath the pillar, and a dog on this shaft engaging the teeth when the cam is down; of a pin movable in the pillar and resting on the cam, a scale-beam whose fulcrum is supported by the pin in rear of the push-bar, the beam having price-per-pound notches in its lower edge corresponding with said teeth and being also provided with a scale-of-price totals, and a weight moving over the latter.

In a scale, the combination with a pushbar raised by the descent of the platform and pointed at its upper end, a horizontal track having teeth, a carriage movable thereon and having twin pillars near one end and a single pillar near the other, a rock-shaft journaled in the carriage and having a handle, cams on the shaft beneath the pillars, and a dog on the shaft engaging said teeth when the cams are down; of a single pin in the single pillar resting on the cam beneath, twin pins in the other pillars having a head resting on the cam beneath, twin cap-pieces on these pins supporting bearings, a bracket on the carriage having an opening, a scale-beam having a fulcrum mounted in said bearings and provided on its lower edge with priceperpound notches adapted to engage said point, a scale-ofprice totals also on the beam, a weight moving thereover, a portion of said beam standing above the single pin, and a finger engaging the opening in the bracket.

4. In a scale, the combination with the framework having a track at its head, a lever pivotally supported from said head and connected at one side of said support with the platform, a pivot in the lever at the opposite side of the support, and an upright counterbalanced push-bar mounted on this pivot and extending between the rails of said track; of a carriage movable on the track and having a longitudinal slot through which said pushbar projects, a support on said carriage in rear of the push-bar, a scale-beam fulcrumed on the support and whose lower edge has notches engaging the pointed upper end of the push-bar, and a weight movable thereover.

5. In a scale, the combination with the framework having a track at its head, a lever pivotally supported from said head and connected at one side of said support with the platform, a pivot in the lever at the opposite side of the support, an upright counterbalanced push-bar mounted on this pivot and extending between the rails of said track, and guide-fingers carried by the track for preventing lateral movement of the push-bar; of a carriage movable on the track and having a longitudinal slot through which said push-bar and fingers project, a support on said carriage in rear of the push-bar, a scale-beam fulcrumed on the support and whose lower edge engages the upper end of the push-bar, the beam also having a scale-of-price totals, and a weight movable thereover.

6. In a scale, the combination with the fulcrumed beam having a nose provided with a notch, and connections between the beam and platform; of a pendant having a head and a stem which latter in section forms three sides of a hollow square, a knife-edge across the stem above its center of gravity, and capacityweights notched so as to be built up on the stem beyond the fulcrum and nose.

In testimony whereof I have hereunto subscribed my signature this 13th day of April, A. D. 1900.

ALLEN DE VILBISS, .TR.

Witnesses:

L. W. RAKESTRAW JAMES B. SMITH. 

